OMAPL138如何在Linux下使用EDMA3驱动

yyj

3 N$ ^! n& a( r% j; U

1. [code]EDMA sample test application
   
2. /*
   / w7 G1 X8 L& J% e$ a8 `% o% f
3. * edma_test.c
   
4. *
   
5. * brief  EDMA3 Test Application
   
6. *
   ( b, y9 `/ ~8 K% e1 x7 e4 O) u4 P
7. *   This file contains EDMA3 Test code.
   
8. *
   * |4 B# ?  A: {& O
9. *   NOTE: THIS FILE IS PROVIDED ONLY FOR INITIAL DEMO RELEASE AND MAY BE
   . W. u5 l8 p8 f
10. *         REMOVED AFTER THE DEMO OR THE CONTENTS OF THIS FILE ARE SUBJECT
    
11. *         TO CHANGE.
    2 n, a  P5 ]! k' P. J( A0 H8 \" [
12. *
    
13. * Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/
    : I8 ]9 m' k0 Z; q& N* z9 [
14. *
    6 b) q& n# P& P' W+ q9 E$ V! G3 Z
15. * This program is free software; you can redistribute it and/or
    - e3 H! N% J2 n. Y$ p! b
16. * modify it under the terms of the GNU General Public License as
    
17. * published by the Free Software Foundation version 2.
    
18. *
    4 o7 B8 f/ K* z8 w. k1 M
19. * This program is distributed "as is" WITHOUT ANY WARRANTY of any
    1 x( Z; |% ]/ H- Z5 j2 y0 U. a
20. * kind, whether express or implied; without even the implied warranty
    / S7 k. f2 V/ N+ X: |$ M
21. * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    & o3 P; m4 N. R' |6 q* z% b) d
22. * GNU General Public License for more details.
    
23. */
    
24. 
    
25. #include <linux/module.h>
    ' T+ C4 d8 X4 Z7 r; ]- O
26. #include <linux/init.h>
    
27. #include <linux/errno.h>
    * e) ?/ j4 A2 f' l) i) P
28. #include <linux/types.h>
    $ h  Y, j$ K0 w
29. #include <linux/interrupt.h>
    ; F( Z; G4 z6 d
30. #include <asm/io.h>
    : z' W9 E6 l2 R5 O8 t
31. #include <linux/moduleparam.h>
    
32. #include <linux/sysctl.h>
    ! h& s/ J9 g' h1 o- b5 F5 o; ~  f
33. #include <linux/mm.h>
    
34. #include <linux/dma-mapping.h>
    % r3 w. a; h, {6 W8 E
35. 
    % }3 C, r+ p; ~; |
36. #include <mach/memory.h>
    ' Q5 y3 _& M- u  h# b4 R) H8 R
37. #include <mach/hardware.h>
    
38. #include <mach/irqs.h>
    
39. #include <asm/hardware/edma.h>
    
40. 
    
41. #undef EDMA3_DEBUG
    
42. /*#define EDMA3_DEBUG*/
    0 Y" ^7 V* h: i) J$ K
43. 
    $ q9 N& ?5 z& m7 B% s5 Y
44. #ifdef EDMA3_DEBUG
    
45. #define DMA_PRINTK(ARGS...)  printk(KERN_INFO "<%s>: ",__FUNCTION__);printk(ARGS)
    
46. #define DMA_FN_IN printk(KERN_INFO "[%s]: start\n", __FUNCTION__)
    # k+ S( u6 [5 H7 i# K. L" T, E
47. #define DMA_FN_OUT printk(KERN_INFO "[%s]: end\n",__FUNCTION__)
    + ~$ D+ t, E* b
48. #else
    
49. #define DMA_PRINTK( x... )
    + d/ U: w; Z/ U# t4 Z
50. #define DMA_FN_IN
    
51. #define DMA_FN_OUT
    3 n3 n  c4 c" L( m4 V1 Z
52. #endif
    : W5 q% Z( N9 q" q. c: N6 x
53. 
    
54. #define MAX_DMA_TRANSFER_IN_BYTES   (32768)
    
55. #define STATIC_SHIFT                3
    3 `3 r( O1 J6 c- X+ f5 Z
56. #define TCINTEN_SHIFT               20
    
57. #define ITCINTEN_SHIFT              21
    0 B8 w* I. V! d7 a
58. #define TCCHEN_SHIFT                22
    $ }6 `% q9 M" R9 T) z: S0 z1 Y# C& h
59. #define ITCCHEN_SHIFT               23
    
60. 
    0 E* p, I7 M6 H7 s: v( A3 A) U
61. static volatile int irqraised1 = 0;
    
62. static volatile int irqraised2 = 0;
    
63. 
    
64. int edma3_memtomemcpytest_dma(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);
    : ?0 t1 c9 G( K" \: F; e$ O3 K, e
65. int edma3_memtomemcpytest_dma_link(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);
    - l2 {% H! Q4 \( S6 f7 c
66. int edma3_memtomemcpytest_dma_chain(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);
    
67. 
    ; B+ Q" ]8 L% K7 I7 g
68. dma_addr_t dmaphyssrc1 = 0;
    
69. dma_addr_t dmaphyssrc2 = 0;
    
70. dma_addr_t dmaphysdest1 = 0;
    - R: D, C9 T. b9 c  }- ~% I
71. dma_addr_t dmaphysdest2 = 0;
    
72. 
    
73. char *dmabufsrc1 = NULL;
    / G9 ~- V, i. R! b) b
74. char *dmabufsrc2 = NULL;
    
75. char *dmabufdest1 = NULL;
    
76. char *dmabufdest2 = NULL;
    . D0 F5 t% Z4 v8 C; O5 j
77. 
    ) \2 v6 |' x1 z( v- t& ?6 C6 D
78. static int acnt = 512;
    
79. static int bcnt = 8;
    . k4 J% j$ F* Z, ]+ F& T) W' d
80. static int ccnt = 8;
    
81. 
    
82. module_param(acnt, int, S_IRUGO);
    
83. module_param(bcnt, int, S_IRUGO);
    
84. module_param(ccnt, int, S_IRUGO);

复制代码

      这是在TI上找到的一个针对Davanci处理器简单的EDMA3驱动程序测试例程的一部分，我在编译的过程中是用
arm-none-linux-gnueabi-gcc  -I /home/tl/omapl138/linux-3.3/arch/arm/include -I /home/tl/omapl138/linux-3.3/include  EDMA3test.cpp -o EDMA3这个命令来链接库文件进行编译，但是报的错误特别多，我又试着一个函数一个函数往进加，仍然是很多错误。
2 L3 M- x& K) n9 q& e+ {     我想问一下如何用一个简单的程序来测试一下EDMA3的驱动。